Pacers president Larry Bird said the team was "greatly" concerned about George's injury.

"At this time our thoughts and prayers are with Paul," Bird said in statement. "We are still gathering details and will have an updated statement Saturday."

George's name started trending worldwide on social media after the incident, and several NBA players showed their support for him on Twitter.

"Prayers go out to Paul George and his family. Keep ya head up G," Harden tweeted not along after the incident.

"Hurt my stomach the moment I heard the news! I didn't want to believe it. Man I need u out there bro! Get well and have a speedy recovery PG24! #YoungKing #StriveForGreatness," LeBron James tweeted.

Ethan Miller / Getty Images

U.S. players (from left to right) Andre Drummond, DeMarcus Cousins and Chandler Parsons react after Paul George suffered a gruesome leg injury during a team scrimmage in Las Vegas on Friday.

U.S. players (from left to right) Andre Drummond, DeMarcus Cousins and Chandler Parsons react after Paul George suffered a gruesome leg injury during a team scrimmage in Las Vegas on Friday. (Ethan Miller / Getty Images)

"Prayers up for Paul George!!!!! I've been saying the backstop of the basket should be pushed back further," Ty Lawson tweeted.